Add get_version script to automate release versions (PEP386 naming)deluge-2.0.0.dev0

1 files changed, 70 insertions, 0 deletions

diff --git a/version.py b/version.py
new file mode 100644
index 000000000..f20fc4863
--- /dev/null
+++ b/version.py
@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+# Authors: Douglas Creager <dcreager@dcreager.net>
+#          Calum Lind <calumlind@gmail.com>
+#
+# This file is placed into the public domain.
+#
+# Calculates the current version number by first checking output of “git describe”,
+# modified to conform to PEP 386 versioning scheme.  If “git describe” fails
+# (likely due to using release tarball rather than git working copy), then fall
+# back on reading the contents of the RELEASE-VERSION file.
+#
+# Usage: Import in setup.py, and use result of get_version() as package version:
+#
+# from version import *
+#
+# setup(
+#     ...
+#     version=get_version(),
+#     ...
+# )
+#
+# Script will automatically update the RELEASE-VERSION file, if needed.
+# Note that  RELEASE-VERSION file should *not* be checked into git; please add
+# it to your top-level .gitignore file.
+#
+# You'll probably want to distribute the RELEASE-VERSION file in your
+# sdist tarballs; to do this, just create a MANIFEST.in file that
+# contains the following line:
+#
+#   include RELEASE-VERSION
+#
+
+__all__ = ("get_version")
+
+from subprocess import Popen, PIPE
+VERSION_FILE = "RELEASE-VERSION"
+
+def call_git_describe(prefix='', suffix=''):
+    cmd = 'git describe --tags --match %s[0-9]*' % prefix
+    try:
+        version = Popen(cmd.split(), stdout=PIPE).communicate()[0]
+        version = version.strip().replace(prefix, '')
+        if '-' in version:
+            version = '.dev'.join(version.replace(suffix,'').split('-')[:2])
+        return version
+    except:
+        return None
+
+def get_version(prefix='', suffix=''):
+    try:
+        with open(VERSION_FILE, "r") as f:
+            release_version = f.readline().strip()
+    except:
+        release_version = None
+
+    version = call_git_describe(prefix, suffix)
+
+    if version is None:
+        version = release_version
+    if version is None:
+        raise ValueError("Cannot find the version number!")
+
+    if version != release_version:
+        with open(VERSION_FILE, "w") as f:
+            f.write("%s\n" % version)
+
+    return version
+
+if __name__ == "__main__":
+    print get_version(prefix='deluge-', suffix='.dev0')